1 files changed, 149 insertions, 0 deletions

diff --git a/arch/cris/arch-v32/mach-a3/io.c b/arch/cris/arch-v32/mach-a3/io.c
new file mode 100644
index 000000000000..9eeaf3eca474
--- /dev/null
+++ b/arch/cris/arch-v32/mach-a3/io.c
@@ -0,0 +1,149 @@
+/*
+ * Helper functions for I/O pins.
+ *
+ * Copyright (c) 2005-2007 Axis Communications AB.
+ */
+
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/string.h>
+#include <linux/ctype.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <asm/io.h>
+#include <asm/arch/mach/pinmux.h>
+#include <hwregs/gio_defs.h>
+
+struct crisv32_ioport crisv32_ioports[] = {
+        {
+                (unsigned long *)REG_ADDR(gio, regi_gio, rw_pa_oe),
+                (unsigned long *)REG_ADDR(gio, regi_gio, rw_pa_dout),
+                (unsigned long *)REG_ADDR(gio, regi_gio, r_pa_din),
+                32
+        },
+        {
+                (unsigned long *)REG_ADDR(gio, regi_gio, rw_pb_oe),
+                (unsigned long *)REG_ADDR(gio, regi_gio, rw_pb_dout),
+                (unsigned long *)REG_ADDR(gio, regi_gio, r_pb_din),
+                32
+        },
+        {
+                (unsigned long *)REG_ADDR(gio, regi_gio, rw_pc_oe),
+                (unsigned long *)REG_ADDR(gio, regi_gio, rw_pc_dout),
+                (unsigned long *)REG_ADDR(gio, regi_gio, r_pc_din),
+                16
+        },
+};
+
+#define NBR_OF_PORTS sizeof(crisv32_ioports)/sizeof(struct crisv32_ioport)
+
+struct crisv32_iopin crisv32_led_net0_green;
+struct crisv32_iopin crisv32_led_net0_red;
+struct crisv32_iopin crisv32_led2_green;
+struct crisv32_iopin crisv32_led2_red;
+struct crisv32_iopin crisv32_led3_green;
+struct crisv32_iopin crisv32_led3_red;
+
+/* Dummy port used when green LED and red LED is on the same bit */
+static unsigned long io_dummy;
+static struct crisv32_ioport dummy_port = {
+        &io_dummy,
+        &io_dummy,
+        &io_dummy,
+        32
+};
+static struct crisv32_iopin dummy_led = {
+        &dummy_port,
+        0
+};
+
+static int __init crisv32_io_init(void)
+{
+        int ret = 0;
+
+        u32 i;
+
+        /* Locks *should* be dynamically initialized. */
+        for (i = 0; i < ARRAY_SIZE(crisv32_ioports); i++)
+                spin_lock_init(&crisv32_ioports[i].lock);
+        spin_lock_init(&dummy_port.lock);
+
+        /* Initialize LEDs */
+#if (defined(CONFIG_ETRAX_NBR_LED_GRP_ONE) || defined(CONFIG_ETRAX_NBR_LED_GRP_TWO))
+        ret += crisv32_io_get_name(&crisv32_led_net0_green,
+                CONFIG_ETRAX_LED_G_NET0);
+        crisv32_io_set_dir(&crisv32_led_net0_green, crisv32_io_dir_out);
+        if (strcmp(CONFIG_ETRAX_LED_G_NET0, CONFIG_ETRAX_LED_R_NET0)) {
+                ret += crisv32_io_get_name(&crisv32_led_net0_red,
+                        CONFIG_ETRAX_LED_R_NET0);
+                crisv32_io_set_dir(&crisv32_led_net0_red, crisv32_io_dir_out);
+        } else
+                crisv32_led_net0_red = dummy_led;
+#endif
+
+        ret += crisv32_io_get_name(&crisv32_led2_green, CONFIG_ETRAX_V32_LED2G);
+        ret += crisv32_io_get_name(&crisv32_led2_red, CONFIG_ETRAX_V32_LED2R);
+        ret += crisv32_io_get_name(&crisv32_led3_green, CONFIG_ETRAX_V32_LED3G);
+        ret += crisv32_io_get_name(&crisv32_led3_red, CONFIG_ETRAX_V32_LED3R);
+
+        crisv32_io_set_dir(&crisv32_led2_green, crisv32_io_dir_out);
+        crisv32_io_set_dir(&crisv32_led2_red, crisv32_io_dir_out);
+        crisv32_io_set_dir(&crisv32_led3_green, crisv32_io_dir_out);
+        crisv32_io_set_dir(&crisv32_led3_red, crisv32_io_dir_out);
+
+        return ret;
+}
+
+__initcall(crisv32_io_init);
+
+int crisv32_io_get(struct crisv32_iopin *iopin,
+        unsigned int port, unsigned int pin)
+{
+        if (port > NBR_OF_PORTS)
+                return -EINVAL;
+        if (port > crisv32_ioports[port].pin_count)
+                return -EINVAL;
+
+        iopin->bit = 1 << pin;
+        iopin->port = &crisv32_ioports[port];
+
+        if (crisv32_pinmux_alloc(port, pin, pin, pinmux_gpio))
+                return -EIO;
+
+        return 0;
+}
+
+int crisv32_io_get_name(struct crisv32_iopin *iopin, const char *name)
+{
+        int port;
+        int pin;
+
+        if (toupper(*name) == 'P')
+                name++;
+
+        if (toupper(*name) < 'A' || toupper(*name) > 'E')
+                return -EINVAL;
+
+        port = toupper(*name) - 'A';
+        name++;
+        pin = simple_strtoul(name, NULL, 10);
+
+        if (pin < 0 || pin > crisv32_ioports[port].pin_count)
+                return -EINVAL;
+
+        iopin->bit = 1 << pin;
+        iopin->port = &crisv32_ioports[port];
+
+        if (crisv32_pinmux_alloc(port, pin, pin, pinmux_gpio))
+                return -EIO;
+
+        return 0;
+}
+
+#ifdef CONFIG_PCI
+/* PCI I/O access stuff */
+struct cris_io_operations *cris_iops = NULL;
+EXPORT_SYMBOL(cris_iops);
+#endif
+